Home / 285,928-420,572

Finding the Third Proportional to 285,928 and 420,572

Calculator

Solution

The third proportional to 285,928 and 420,572 is: 618,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,928 : 420,572 = 420,572 : x
  2. Step 2: Convert to fraction form
    285,928/420,572 = 420,572/x
  3. Step 3: Cross multiply
    285,928x = 420,572 × 420,572
  4. Step 4: Simplify right side
    285,928x = 176,880,807,184
  5. Step 5: Solve for x
    x = 176,880,807,184/285,928
  6. Step 6: Final answer
    x = 618,620.10

Related Problems

Find third proportional to 142,964 and 210,286
Half scale
Find third proportional to 571,856 and 841,144
Double scale
Find third proportional to 285,930 and 420,575
Similar ratio
Find third proportional to 428,892 and 630,858
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.